Yes, I agree with Tim. If comments are about an entire graph/ontology, then use rdfs:comment to record them and use as the subject of the comment statement an identifier/name of a model. If comments pertain to a subset of the resources described in a model, then Identify the subset and associate the comments with it.
Irene Polikoff > On Jul 13, 2017, at 2:48 PM, Tim Smith <[email protected]> wrote: > > Ok, now we have the "reason" for needing this functionality: > > Michel wrote: > " I explain why important: we have this concept modelling ontology (CMO) > supporting different modelling styles (decomposition, qudt2.0 etc.). I would > like to group the mechanisms for the different modelling styles together and > introduce the groups with a comment. Alternative is to introduce an annotated > clone of the file for information but I do not like that. Yet another > alternative is to annotate all items separately (“supports modelling style > x”)." > > It's interesting to me that you have used an ontology to capture the > knowledge in your domain and then want to use a "document" (i.e. comments and > proper ordering) to capture additional knowledge about the objects in your > CMO. > > Could you not create another ontology with a classes like "Modeling Style > Mechanism" and "Modeling Stype Group" and then create Modeling Style Group > instances and link the various mechanism instances to it using an appropriate > property? Then you have a fully query-able representation of your modeling > mechanisms, making the information easily discoverable, displayable, etc... > Ontologies are just triples and unless you care about strict inferencing, you > can interchangeably use a Class as an instance or a Class. I use this all > the time to capture knowledge and data using the same ontologies. > > Just a thought, > > Tim > > > On Thu, Jul 13, 2017 at 2:31 PM, Irene Polikoff <[email protected] > <mailto:[email protected]>> wrote: > Michel, > > Serializations and deserialization provide a way for data to be translated > into a format that could be used for transmission, interchange, storage in a > file system, etc. with the ability for it to be later reconstructed to create > semantically identical clone of the data. > > The goal of RDF serializations and tool interoperability is to ensure that if > tool A produces a serialization of a graph X, tool B can read it in and > understand it as graph X. Tool B can then, in its turn, produce serialization > of graph X, tool A can import it and it is still the same graph. The > serialization output of A may not look exactly the same as the serialization > output of B, but their semantic interpretation is always the same. > > Serialization/deserialization process is not intended to ensure that the > sequence of bytes in a file will be exactly the same. In case of both > RDF/XML and Turtle format, there are several syntactic variations for > representing the same information. The simplest RDF serialization is > N-Triple. There is little room in it for syntactic variations as it just > contains triple statements. However, even with that simplicity, there are > variants since the order of statements may vary. The bottom line is that if > you are using serializations in the interchange and parse them to deserialize > for use in some target system, you need a parser that will understand what > the serialization means semantically and will not rely purely on the byte > sequence. > > If TBC parser was ignoring something that captured semantics of data, this > would be a bug. I do not think it is the case. Comma is not ignored, it is > correctly understood by deserialization when data is imported into TBC. > “Deleting it” is not even a concept because once data is deserialized, comma > no longer exists. We now have a graph. When you save it, it is serialized > anew - without any memory or consideration of how its serialization looked > when it came in. As long as the serialization still represents semantically > identical object, it is correct. > > Regards, > > Irene Polikoff > > >> On Jul 13, 2017, at 4:13 AM, Bohms, H.M. (Michel) <[email protected] >> <mailto:[email protected]>> wrote: >> >> Seriously, if these low-level details of the TTL syntax are relevant to you, >> just use text editors. >> >> Yes, low-level syntax issues ARE very relevant. They are the fundament under >> all we do in the end. When convincing our client to move from SPFF or XML to >> RDF and its serializations they expect implementations that 100% support >> these specs. If a comment is a feature of that spec, if a comma is a feature >> of that spec they do not expect that a parser and or writer ignores or even >> deletes them. Anyway as said before, lets agree to disagree (although your >> views in these matters highly surprise me I must say). >> > > > -- > You received this message because you are subscribed to the Google Groups > "TopBraid Suite Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. > > > -- > You received this message because you are subscribed to the Google Groups > "TopBraid Suite Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- You received this message because you are subscribed to the Google Groups "TopBraid Suite Users" group. 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